public class HW1 {

    public static void main(String[] args) {
    
        System.out.println("--------------------商场库存清单--------------------");
        System.out.println();
        System.out.println("品牌型号\t尺寸\t价格\t库存数");
        
        String model1 = "MacBookAir";
        double size1 = 13.3;
        double price1 = 5699.0;
        int stock1 = 5;
        
        String model2 = "ThinkPadT490";
        double size2 = 14.0;
        double price2 = 8499.0;
        int stock2 = 10;
        
        String model3 = "MateBook 14";
        double size3 = 14.0;
        double price3 = 7199.0;
        int stock3 = 18;
        
        System.out.println(model1 + "\t" + size1 + "\t" + price1 + "\t" + stock1);
        System.out.println(model2 + "\t" + size2 + "\t" + price2 + "\t" + stock2);
        System.out.println(model3 + "\t" + size3 + "\t" + price3 + "\t" + stock3);
        System.out.println();
        
        int totalStock = stock1 + stock2 + stock3;
        double totalValue = (price1 * stock1) + (price2 * stock2) + (price3 * stock3);
        
        System.out.println("----------------------------------------------------");
        System.out.println("总库存数：" + totalStock );
        System.out.println("商品库存总金额：" + totalValue);
    }
}

